System and method for providing random access to a multimedia object over a network

摘要

A system and method provide random access to a multimedia object over a network. One embodiment of the invention includes a streaming media server that is connected to a client computer over a network. The streaming media server includes at least one multimedia object that is adapted for transmission (“streaming”) across the network. A pre-roll calculation program determines a pre-roll for each segment of the multimedia object and generates a modified multimedia object which includes a pre-roll for each of its segments, a pre-roll identifying a portion of the multimedia object to be transmitted by the streaming media server and received by the client computer prior to playback of the multimedia object at a selected segment. The pre-roll allows the client computer to present, starting at a selected segment, the multimedia object in its entirety without interruption. The pre-roll calculation program further facilitates the design of the multimedia object to minimize delays associated with random accesses to segments of the multimedia object.

主权项

1. An apparatus, comprising:
a processor configured to request at least a first segment of media data of a multimedia data object from a server, the multimedia data object comprising a plurality of segments including the requested first segment; and a memory, wherein based on buffer time information associated with the requested first segment, the processor is configured to store at least a portion of the requested first segment in the memory prior to playing the requested segment; and wherein, in response to a user request, the processor is further configured to jump to a second segment of the multimedia data object, the processor configured to request the second segment of the multimedia data object from the server, and based on second buffer time information associated with the second segment, the processor configured to store at least a portion of the requested second segment in the memory prior to uninterrupted playing of the requested second segment.